Controller handle



Sept. 4, 1928. 1,683,157

w. w. BRowN CONTROLLER HANDLE Filed June 25.A 1927 lnvetor VVoPcevVV.`EWCA/vn1 Has Attom.

Sept. 4, 1928.

UNITED vSTATES WALTER W, BROWN, or Earn, PENNSYLVANIA, AssieNon ToGENERAL ELECTRIC PATENT OFFICE COMPANY, A CORPORATION OF NEW YORK.

CONTROLLER HANDLE.V

Application filed June 23,

The invention relates to controller handles and more particularly toremovable operatinghandles for controllers of the type in common use ontrolleycars.

*The principal object of the invention is to insui'e that the controllerhandle is rigidly engaged with the controller shaft operated there-bybut may be easily removed at will. y

The ordinary controller operating handle is provided with a hub having albroached hole or socket formed therein of ashape adapted to receive thesquare end. of the con troller shaft. However, with thisairange mentavery close lit between the socket in the hub of the handle and the endof the controller shaft is required to prevent any relative movement.'therebetween and. still permit thecontroller handle readily to beapplied and removedfrom the controller shaft. In case the controllerhandle is not rigidly fixed to thejend of the controller shaft, anyslight lost motion soon is amplifieddue to the resulting wear andconcussion occurring between the end of the controller shaft and thehubof the handle under service conditions. lith an appreciable lostmotion be tween the controller handle and the controller shaft theoperator is unable to feel accurately the engagement of thevcontrollerfingers at the different operating positions of the con-` troller andtherefore is unable to operate the controller to itsvarious positionswith the accuracy and precision obtained vwith the controller handletightly fixed upon the shaft. A Y

The improved controller handle of the present invention is yarranged tobe clamped securely and rigidly upon the shaft ofthe controller at alltimes under operating conditions, and still may be readily released fromthe controller shaft whenever desired.V Briefly this is accomplished inaccordancel with the preferred form of the invention by providing a slotin the hub of the controller handle intersecting the broached hole oropening whichfreceives the end ofthe controller shaft. The operatinghandle proper is pivotally mounted upon the slotted hub so that it maybe raisedfiom its normal operating plane of rotation and carriesresilient cam shaped members that are arranged to exert a wedging actionupon cooperating cam members fixed on the hub insuch manner that theslotted sides of the hub are forcibly 1927. Serial No. 200,880.

by readily permitting easy 'removal of theV handle. f

lllieaccompanying drawing illustrates the` construction ofthe controllerhandle embody a 1 .1 A n u l ing tne preferred form of the inventionouty lined above. Fig. 1 is a view showing theA general arrangement ofthe improved controller handle with certain parts broken away in ordertomore fully reveal the-details of construction. Fig. 2 is a perspectiveexploded view of the several parts of the coni. 1 ii ollei handle, andlhgs and el are sectional f views of `the controller handle along theline 5A of F 1g. 1 with the operating handle in its lowered and raisedpositions respectively.

is shown in Fig. .1 the controller handle comprisesthe hub portion 10which is provided With a breached. hele` 11 forming a socket forreceiving the par-ti'allT squared end of tiie operating shaft 12 of thecontroller 13 whichmay be of any usual type and hence is not shown indetail. The operatingV arm 14 carrying thehandle or knob 15 is pivotallymounted upon the hub 10 by means ofthe bolt 16. p

VAs shown more clearly in the perspective view of Fig. 2, a slot 17intersecting the sockethole 11 in the hub 10 is provided in order topermit-the sides of the hub forming the socket to bey clamped securelyupon the `end of the controller shaft in the manner to be pointed outhereinafter. The opposite sides of the .hub 10 are suitably recessed toseat the cam shaped members 18. These cam shaped members 18 preferablyare formed'of spring steel although they may be'formed integral with thehub 10 if desired.v

The two complementary cam shaped inem- `bers 19 which cooperate with thecam members 18 each are provided with the lugs 2O of suitable dimensionsto engage rwith the rectangular holes 21 formed in the channel sides 22of the arm 14 carrying the operating handle 15. The channel sides 22 ofthe arm 14 are spaced apart so as to snugly lit over the hub 10 with thehandle in its proper operating position as shown in Fig. 1, therebyforming a strong positive driving connection between the hub and themovable handle ar`m1'4.

ln assembling the handle, the cam members` 19 are placed in thesquareholes 21 andthe hub 10 withfthe cam members 18 in place in'- sertedbetween the channels 22.A i Durin this operation the operating arm 14is'raise substantially at right angles tothe hub 10 so as to permit thecam members 1,8 and 19 to nest in complementary cooperating relation.The

bolt 16 isthen passed through the center holesv in the cam members 18'and 19 and the corresponding hole in the hub 10 and tightened upsuiliciently to produce sung engagement of the Y i cam surfaces of themembers 18 an d 19. 'The cam members 19 are made complementary to thecam members 18 so that the double rounded or conical cam surfaces on oneofthe members nest within. the `corresponding 'cram sur'- aces of theother member when the arm 14 isV raised but are'moved out ofnestmgrelation tov exert aresilient wedging action of the sides of `theslotted hul) 1()A when theV arm 14 is lowered Vinto its normal operatingposition. Thus the cam surfaces on the members 18 maybe of conveXconical shape While the cooperating cam surfaces on the members 19 areof concave conical shape. The rounded double conical complementary cammembers 18a-nd 19 illusY trated in the drawing are particularly adapt-yed for producingthe resilient clamping action upon the slotted sides ofthe hub 10 although Y it will be understood that other shapes for the A10 of thehandle may be readily applied to the.

end of the controller shaft 12 since there, is no" cams may be employediitdesired.

TWith-the parts of the handle assembled yas just described, thebroaclied hole 11 in thehub clamping action exerted onthe slottedsides'o the hub-when thearm'14 is in theraisednposition; Fig. 3illustrates in cross Y section `the relative arrangement of the slottedhub, thel operatingvarm and the cam members 18 and'V 19 when the hub ofthe handle isV applied to the controller shaft.V As indated in thedrawing there is ample clearancebetw'een the socket hole in the hub andthe endl of the con!v troller shaft to lpermit .the` easy applicationand removal of the hubwhen the operating` arm 14 is raised.

To/firmly clamp the hub upon the eontroller' shaftlQ it is onlynecessary `to'swing the operating arm 14 from the-raised or VverticaliVposition into its normal horizontal operating 1 position, as indicatedin Fig.1.= This movementofthe operating varm carrieskthe cam A members19 out of nesting relation with the action produced by the cam membersforces cam members 18. The resulting clamping the Slotted sides of thehub10intor`igid en-A gagement with the controller shaft 12, as

shown in Fig. 4."`Tl1`us with the operating armi 14 in its normalhorizontal position the v controller may be accurately rotated to. itsvarious operative positions with nolost -niotiongwhatsoever between theoperating handle and the controller shaft. `As 'previ` ously pointed outthisrgreatly facilitates the accuracy Aand precision of controlandprevents wear of `either the controller shaft or the handle hub.

the operating arm `14. is raised tothe vertical position as indicated bythe dotted lines in Fig. 1` to reestablish" the cooperating nesting hrelation between the cam members 18 and 19.

This" relieves the clamping action `on the slotted sides of the hub 10andthe latter immediately open up to `free thefhub of the mi;

Con-

liandle from the shaft of the controller;

sequently the controller handle maybe readily:

removed Jromtliecontroller shaft. A

It will he notedthat the use of theseparate cam members 18 and 19formed' of spring steel insures long life of vthese" parts even undersevere service conditions, Moreover,

these Vseparate parts may be readily renewed 1 `Whenever necessary@ u iWhile I have shown and described-the` iniventionA embodied in theprefer-'redY form it7 To remove the handle romthe controller i i will beunderstood that various `elianges and modifications may made Withoutdeparting from4 the spirit and scopeof the invention.'

` What I claim as new and desire' to seeunefby* VLetters Patent of theUnitedStates is :f ff

The combination with" aneloetrieeontroller having an operating, shaft,of mi operating Y handle for the controllerslaaf-tineludirnb1 a" slottedhubV portion having a shaft-receiving socket intersecting theslotthereiman operat incr handlepivetallyl mounted upon the slotted uportieri for'rotatienin'theplme subs'-tais-iV tially 1 parallelito theslot Vin said heb, ai "air of ldoable conicaly members-amounted mentaryconical cam members ubi and to decrease `the `Width Vof the slot inithehubwien the persnsgiamdie is lewerea Y y iintoialignmentwitlrtliejhulx[ i Inwitness whereof, I havelhereuntoSfgmny .hand this 21 dayofiJune,`1927f f wanrnnwfnnowiit y

